Marshall Wace’s West Pharmaceutical WST Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $30M | Buy |
83,578
+82,005
| +5,213% | +$25.1M | 0.02% | 560 |
|
|
2026
Q1 | $394K | Sell |
1,573
-34,052
| -96% | -$8.47M | ﹤0.01% | 2550 |
|
|
2025
Q4 | $9.8M | Buy |
35,625
+34,825
| +4,353% | +$9.53M | 0.01% | 880 |
|
|
2025
Q3 | $210K | Sell |
800
-61,726
| -99% | -$15M | ﹤0.01% | 2558 |
|
|
2025
Q2 | $13.7M | Sell |
62,526
-103,573
| -62% | -$22.1M | 0.02% | 723 |
|
|
2025
Q1 | $37.2M | Sell |
166,099
-61,166
| -27% | -$16.9M | 0.05% | 349 |
|
|
2024
Q4 | $74.4M | Buy |
227,265
+99,006
| +77% | +$31.2M | 0.09% | 208 |
|
|
2024
Q3 | $38.5M | Buy |
128,259
+80,280
| +167% | +$24.6M | 0.05% | 332 |
|
|
2024
Q2 | $15.8M | Sell |
47,979
-327,699
| -87% | -$116M | 0.02% | 569 |
|
|
2024
Q1 | $149M | Buy |
375,678
+312,531
| +495% | +$116M | 0.23% | 82 |
|
|
2023
Q4 | $22.2M | Sell |
63,147
-90,614
| -59% | -$32.1M | 0.04% | 449 |
|
|
2023
Q3 | $57.7M | Buy |
153,761
+114,994
| +297% | +$44.5M | 0.12% | 177 |
|
|
2023
Q2 | $14.8M | Sell |
38,767
-19,272
| -33% | -$6.88M | 0.03% | 588 |
|
|
2023
Q1 | $20.1M | Buy |
58,039
+56,983
| +5,396% | +$16.7M | 0.04% | 465 |
|
|
2022
Q4 | $249K | Sell |
1,056
-112,121
| -99% | -$26.6M | ﹤0.01% | 2628 |
|
|
2022
Q3 | $27.8M | Buy |
113,177
+87,634
| +343% | +$26.7M | 0.06% | 346 |
|
|
2022
Q2 | $7.72M | Buy |
+25,543
| New | +$8.31M | 0.02% | 1049 |
|
|
2022
Q1 | – | Sell |
-199
| Closed | -$93K | – | 4099 |
|
|
2021
Q4 | $93K | Sell |
199
-248,900
| -100% | -$107M | ﹤0.01% | 3399 |
|
|
2021
Q3 | $106M | Buy |
249,099
+93,783
| +60% | +$39.5M | 0.44% | 25 |
|
|
2021
Q2 | $55.8M | Buy |
+155,316
| New | +$51.3M | 0.25% | 68 |
|
|
2020
Q4 | – | Sell |
-10,445
| Closed | -$2.87M | – | 2219 |
|
|
2020
Q3 | $2.87M | Sell |
10,445
-1,767
| -14% | -$468K | 0.02% | 704 |
|
|
2020
Q2 | $2.77M | Buy |
+12,212
| New | +$2.4M | 0.02% | 665 |
|
|
2020
Q1 | – | Sell |
-10,825
| Closed | -$1.63M | – | 2101 |
|
|
2019
Q4 | $1.63M | Sell |
10,825
-17,926
| -62% | -$2.61M | 0.01% | 866 |
|
|
2019
Q3 | $4.08M | Buy |
+28,751
| New | +$3.96M | 0.03% | 562 |
|
|
2019
Q2 | – | Sell |
-80,140
| Closed | -$8.83M | – | 1897 |
|
|
2019
Q1 | $8.83M | Buy |
+80,140
| New | +$8.34M | 0.08% | 298 |
|
|
2018
Q4 | – | Sell |
-99,369
| Closed | -$12.3M | – | 1840 |
|
|
2018
Q3 | $12.3M | Buy |
99,369
+85,464
| +615% | +$9.58M | 0.1% | 260 |
|
|
2018
Q2 | $1.38M | Buy |
+13,905
| New | +$1.28M | 0.02% | 471 |
|
|
2016
Q3 | – | Sell |
-8,500
| Closed | -$645K | – | 1156 |
|
|
2016
Q2 | $645K | Sell |
8,500
-27,938
| -77% | -$2.03M | 0.01% | 788 |
|
|
2016
Q1 | $2.53M | Buy |
+36,438
| New | +$2.19M | 0.02% | 508 |
|
Other funds holding WST
GIM
Marshall Wace's WST Position: Q2 2026 in Review
Marshall Wace increased its West Pharmaceutical (WST) stake by 5,213% in Q2 2026, buying an estimated $25.1M and bringing the position to 83,578 shares worth $30M. The position accounts for 0.02% of the portfolio, ranked #560.
Marshall Wace first reported a position in WST in Q1 2016 and has held it in 29 quarters since. The position peaked at $149M in Q1 2024. 830 funds tracked by Wall St. Rank hold WST as of Q2 2026.
- Marshall Wace held 83,578 shares of West Pharmaceutical worth $30M as of Q2 2026.
- Marshall Wace bought 82,005 West Pharmaceutical shares in Q2 2026, an estimated $25.1M.
- West Pharmaceutical made up 0.02% of Marshall Wace's portfolio in Q2 2026, its #560 holding.
- Marshall Wace first reported a position in West Pharmaceutical in Q1 2016 and has held it in 29 quarters since.
- Marshall Wace's West Pharmaceutical position peaked at $149M in Q1 2024.
- 830 funds tracked by Wall St. Rank held West Pharmaceutical as of Q2 2026.
Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.